"""
Copyright (c) 2022 Huawei Technologies Co.,Ltd.

openGauss is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:

          http://license.coscl.org.cn/MulanPSL2

THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details.
"""
"""
Case Type   : reindex
Case Name   : 使用reindex在线对索引不可用的表重建索引
Create At   : 2021/12/13
Owner       : @zou_jialiang050
Description :
    1.建表
    2.向表中插入数据
    3.创建索引
    4.设置索引为不可用
    5.查询表索引状态
    6.使用reindex对表在线重建索引,再次查询表索引状态
    7.清理环境
Expect      :
    1.建表成功
    2.向表中插入数据成功
    3.创建索引成功
    4.设置成功
    5.返回索引状态不可用
    6.不重建不可用索引
    7.清理环境成功
History     :
"""

import os
import unittest
from yat.test import Node
from testcase.utils.CommonSH import CommonSH
from testcase.utils.Constant import Constant
from testcase.utils.Logger import Logger


class SQL(unittest.TestCase):
    def setUp(self):
        self.logger = Logger()
        self.logger.info(f'-----{os.path.basename(__file__)} start-----')
        self.dbuserNode = Node('PrimaryDbUser')
        self.primary_sh = CommonSH('PrimaryDbUser')
        self.table = 't_reindex_concurrently_0014'
        self.index = 'i_reindex_concurrency_0014'
        self.Constant = Constant()

    def test_reindex(self):
        step1 = 'step1:建表  expect:建表成功'
        self.logger.info(step1)
        create_table = self.primary_sh.execut_db_sql(f'''
            drop table if exists {self.table};
            create table {self.table}(c_int int,c_char varchar(12));''')
        self.logger.info(create_table)
        self.assertIn(self.Constant.TABLE_DROP_SUCCESS, create_table,
                      "执行失败" + step1)
        self.assertIn(self.Constant.CREATE_TABLE_SUCCESS, create_table,
                      "建表失败" + step1)

        step2 = 'step2:向表中插入数据 expect:向表中插入数据成功'
        self.logger.info(step2)
        insert_data = self.primary_sh.execut_db_sql(
            f'''insert into {self.table} values(generate_series(1,500000),
            'got u');''')
        self.logger.info(insert_data)
        self.assertIn(self.Constant.INSERT_SUCCESS_MSG, insert_data,
                      "执行失败" + step2)

        step3 = 'step3:创建索引 expect:创建索引成功'
        self.logger.info(step3)
        create_index = self.primary_sh.execut_db_sql(
            f'''drop index if exists {self.index};
            create index {self.index} on {self.table}(c_int);''')
        self.logger.info(create_index)
        self.assertIn(self.Constant.DROP_INDEX_SUCCESS_MSG, create_index,
                      "执行失败" + step3)
        self.assertIn(self.Constant.CREATE_INDEX_SUCCESS_MSG, create_index,
                      "执行失败" + step3)

        step4 = 'step4:设置索引不可用  expect:设置成功'
        self.logger.info(step4)
        disable_index = self.primary_sh.execut_db_sql(
            f'''alter index {self.index} unusable;''')
        self.logger.info(disable_index)
        self.assertIn(self.Constant.ALTER_INDEX_SUCCESS_MSG, disable_index,
                      "设置索引不可用失败" + step4)

        step5 = 'step5:查询表索引状态 expect:返回索引状态不可用'
        self.logger.info(step5)
        unusable_index = self.primary_sh.execut_db_sql(
            f'''\\d {self.table}''')
        self.logger.info(unusable_index)
        self.assertIn(f'"{self.index}" btree (c_int) TABLESPACE '
                      f'pg_default UNUSABLE', unusable_index, "执行失败" +
                      step5)

        step6 = 'step6:使用reindex对表在线重建索引,再次查询表索引状态' \
                'expect:不重建不可用索引'
        self.logger.info(step6)
        reindex = self.primary_sh.execut_db_sql(
            f'''reindex table concurrently {self.table};
            \\d {self.table}''')
        self.logger.info(reindex)
        self.assertIn(f'"{self.index}" btree (c_int) TABLESPACE pg_default '
                      f'UNUSABLE', unusable_index, "执行失败" + step6)

    def tearDown(self):
        step7 = 'step7:清理环境 expect:清理环境成功'
        self.logger.info(step7)
        clean_environment = self.primary_sh.execut_db_sql(
            f'''drop table {self.table} cascade;''')
        self.logger.info(clean_environment)
        self.assertIn(self.Constant.DROP_TABLE_SUCCESS, clean_environment,
                      "执行失败" + step7)
        self.logger.info(f'-----{os.path.basename(__file__)} end-----')
